You guys are great...of course, I have already lost 2 of little black springs...but, I think they will still turn up...next time...and there will be a next time...I'll use the plastic bag trick.
Are you saying that Atlas sells 70T and 100T trucks...but, they are all identical?...what about 33 and 36 inch wheels...are they identical, also...after all, much does 3" scale out to in O scale...is that 1/4 of an inch...it seems that would be significant.